[pgpool-committers: 1966] pgpool: Faulty logic of find_primary_node() function having pgtry-catch

[Muhammad Usama]

Faulty logic of find_primary_node() function having pgtry-catch block inside the for-loop was causing
the find_primary_node() to return wrong primary node id, when an error is thrown from
make_persistent_db_connection() and for-loop gets terminated prematurely.
This check-in fixes the issue by creating the wrapper verify_backend_node_status()
over make_persistent_db_connection() and related logic of verifying backend node connectivity.
Hence removing the try-catch from find_primary_node() loop, which was the cause of problem.

Branches
--------
EXCEPTION_MGR
master

Details
-------
http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=999fab50cc8d6b5794f7ffefb4f0ff3d50fb1dec

Modified Files
--------------
src/main/pgpool_main.c  |  183 +++++++++++++++++++++++++++--------------------
src/watchdog/watchdog.c |    5 ++
2 files changed, 109 insertions(+), 79 deletions(-)